知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

61 records (took 0.022 seconds)

    RADIO FREQUENCY SENSING
    41.
    发明公开
    RADIO FREQUENCY SENSING 审中-公开

    公开(公告)号：US20230344678A1

    公开(公告)日：2023-10-26

    申请号：US18193594

    申请日：2023-03-30

    Applicant: QUALCOMM Incorporated

    Inventor： Sandip HOMCHAUDHURI ,  Xiaoxin ZHANG ,  Harinder SINGH

    IPC: H04L25/02 ,  H04L61/103 ,  H04W64/00

    CPC classification number: H04L25/022 ,  H04L61/103 ,  H04W64/006

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a sensing device may transmit a first Layer 2 (L2) data packet that includes a Layer 2.5 (L2.5) frame. The sensing device may receive a second L2 data packet that includes a response to the L2.5 frame. Motion data indicating whether an object is moving may be generated based at least in part on a channel frequency response associated with receiving the second L2 data packet. Numerous other aspects are described.

    RADIO FREQUENCY SENSING IN A TELEVISION ENVIRONMENT
    44.
    发明申请
    RADIO FREQUENCY SENSING IN A TELEVISION ENVIRONMENT 有权

    公开(公告)号：US20220295144A1

    公开(公告)日：2022-09-15

    申请号：US17201497

    申请日：2021-03-15

    Applicant: QUALCOMM Incorporated

    Inventor： Xiaoxin ZHANG ,  Rishabh RAJ ,  Parthiban ELLAPPAN

    IPC: H04N21/442 ,  H04B17/309 ,  H04N21/45

    Abstract: Techniques are provided for performing radio frequency (RF) sensing to determine the viewing status of a television user. This can be used to determine user behavior during the playback of content (e.g., whether a user is watching the content), which can be used as a data point for determining the user's level of interest in the content. Using the status of the television user, embodiments can provide additional or alternative functionality, such as powering down and/or powering up the television. Furthermore, RF sensing may be performed by existing television hardware, such a Wi-Fi transceiver, and may therefore provide RF sensing functionality to a television with little or no added cost.

    COMMUNICATION SYSTEM RADAR SIGNALING
    45.
    发明申请
    COMMUNICATION SYSTEM RADAR SIGNALING 有权

    公开(公告)号：US20220283262A1

    公开(公告)日：2022-09-08

    申请号：US17195097

    申请日：2021-03-08

    Applicant: QUALCOMM Incorporated

    Inventor： Alexandros MANOLAKOS ,  Seyong PARK ,  Weimin DUAN ,  Xiaoxin ZHANG

    IPC: G01S7/00 ,  H04W8/24 ,  G01S7/02

    Abstract: A communication device includes a processor configured to: transfer, via a transceiver, a wireless data signal within a communication frequency range; determine a capability of the communication device to measure a wireless radar signal received via the transceiver, the wireless radar signal having a frequency within the communication frequency range; transmit, via the transceiver to a network entity, a first indication of the capability of the communication device to measure the wireless radar signal, the first indication being indicative of a transmit power level of the wireless radar signal from a source of the wireless radar signal or a received power level of the wireless radar signal at the communication device; receive, via the transceiver, the wireless radar signal; determine a positioning measurement of the wireless radar signal; and transmit a second indication of the positioning measurement via the transceiver to the network entity.

    PROTECTION OF RANGING SOUNDING SIGNALS FROM PHYSICAL LEVEL ATTACKS
    47.
    发明申请
    PROTECTION OF RANGING SOUNDING SIGNALS FROM PHYSICAL LEVEL ATTACKS 审中-公开

    公开(公告)号：US20190052484A1

    公开(公告)日：2019-02-14

    申请号：US16152998

    申请日：2018-10-05

    Applicant: QUALCOMM Incorporated

    Inventor： Erik David LINDSKOG ,  Ning ZHANG ,  Naveen Kumar KAKANI ,  Alireza RAISSINIA ,  Xiaoxin ZHANG

    IPC: H04L25/02 ,  H04L29/06 ,  H04W12/12

    Abstract: Generally, the described techniques provide for protection mechanisms for sounding training signals transmitted between wireless devices when performing ranging sounding estimation. For example, sounding training signals may be encoded to include a sequence of phase rotations or cyclic shifts to protect the sounding training signal from peer devices. In some cases, encoding information associated with a long training field (LTF) may be transmitted either before or after the LTF is transmitted. Additionally or alternatively, a time delay may be introduced to the sounding training signal, where timing information may be removed from one or more fields of the sounding training signal and the time delay may be appended to an interframe spacing. Alternatively, a frame may be split into multiple frames with the sounding training signal in a first frame, and timing information in a second frame that is offset in time from the first frame.

    SINGLE-SIDED ROUND TRIP TIME (RTT) LOCATION ESTIMATION
    50.
    发明公开
    SINGLE-SIDED ROUND TRIP TIME (RTT) LOCATION ESTIMATION 审中-公开

    公开(公告)号：US20230413208A1

    公开(公告)日：2023-12-21

    申请号：US17844390

    申请日：2022-06-20

    Applicant: QUALCOMM Incorporated

    Inventor： James Simon CHO ,  Xiaoxin ZHANG ,  Sandip HOMCHAUDHURI ,  Alireza RAISSINIA

    IPC: H04W56/00

    CPC classification number: H04W56/006 ,  H04W56/001

    Abstract: This disclosure provides methods, devices and systems for performing a single-sided ranging operation. In some implementations, a first device transmits a first frame to a wireless station (STA), and receives a second frame from the STA responsive to the first frame. The first device obtains information indicating a time period between transmission of the first frame and reception of the second frame by the first device, and obtains information indicating time delays associated with a plurality of second devices, where each of the time delays is between respective receptions of the first frame and the second frame by a respective one of the second devices. The first device obtains a position of the STA based on the time period, the time delays associated with the plurality of second devices, and signal propagation times between the first device and each of the plurality of second devices.

Patent Agency Ranking